2001-02-12 11:00:00 ShengHuo ZHU <zsh@cs.rochester.edu>

2001-02-12 11:00:00  ShengHuo ZHU  <zsh@cs.rochester.edu>

	* gnus-topic.el (gnus-subscribe-topics): Return nil if not
	subscribe.

	* gnus-start.el (gnus-call-subscribe-functions): New.
	(gnus-find-new-newsgroups): Use it.
	(gnus-ask-server-for-new-groups): Use it.
	(gnus-check-first-time-used): Use it.
	(gnus-subscribe-newsgroup-method): Grok a list of functions.
	(gnus-subscribe-options-newsgroup-method): Ditto.
	(gnus-subscribe-hierarchically): Return gnus-subscribe-newsgroup's
	return .